If it's a unit powered by electricity, you'll need to enlist the help of a professional. They can last for several years if properly maintained. Having a properly installed sump means you can keep the water out and save your floors, walls, and ceilings from getting wet and moldy. You might be surprised at what you find. Afterward, cement the pit. This is not as simple as it sounds. Fortunately, it's a relatively simple process to retrofit your home.